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1 /* |
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2 * Copyright (c) 2009 Aricent and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Aricent - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * Export header file for Wrapper APIs.Interface class for |
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16 * Mp3 Decoder Wrapper.The member functions are pure virtual functions which |
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17 * are to be implemented by the derived class. |
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18 * |
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19 */ |
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20 |
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21 #ifndef ARIMP3DECWRAPPER_H |
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22 #define ARIMP3DECWRAPPER_H |
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23 |
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24 // System includes |
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25 #include <E32Base.h> |
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26 |
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27 // Class declaration |
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28 class TMp3FrameInfo |
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29 { |
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30 |
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31 public: |
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32 TInt iSamplingFrequency; |
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33 TInt iNumberOfChannels; |
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34 TInt iBufferSize; |
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35 TInt iBitRate; |
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36 |
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37 }; |
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38 |
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39 // Class declaration |
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40 class CAriMp3DecWrapper : public CBase |
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41 { |
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42 |
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43 public: |
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44 /** |
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45 * Two-phased constructor. |
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46 * @return pointer to an instance of CAriMp3DecWrapper |
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47 */ |
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48 IMPORT_C static CAriMp3DecWrapper* NewL(); |
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49 /**> Destructor */ |
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50 virtual ~CAriMp3DecWrapper(); |
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51 /** |
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52 * The function resets the decoder. |
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53 * @param |
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54 * @return return status |
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55 */ |
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56 virtual TInt Reset() = 0 ; |
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57 /** |
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58 * The function Gets frame information for the given source. |
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59 * @param aBuf |
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60 * Pointer to buffer containing the header of input stream data |
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61 * @param aBufLen |
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62 * Size of Buffer in bytes |
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63 * @param aFrameLen |
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64 * Length of the frame |
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65 * @param aInfo |
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66 * Reference to the structure TMp3FrameInfo |
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67 * @return return status |
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68 */ |
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69 virtual TInt GetFrameInfo( const TUint8* aBuf, TInt aBufLen, |
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70 TInt &aFrameLen, TMp3FrameInfo& aInfo ) = 0 ; |
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71 /** |
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72 * The function Gets maximum out put frame length with the information |
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73 * @param aFrameLen |
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74 * Length of the maximum out put frame |
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75 * @param aInfo |
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76 * Reference to the structure TMp3FrameInfo |
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77 * @return return status |
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78 */ |
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79 virtual TInt GetMaxFrameInfo( TInt &aFrameLen, |
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80 TMp3FrameInfo& aInfo ) = 0 ; |
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81 /** |
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82 * The function gives the offset value of the buffer from where frame |
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83 * starts. |
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84 * @param aBuf |
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85 * Pointer to the input buffer |
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86 * @param aBufLen |
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87 * Length of the input buffer |
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88 * @param aSyncPos |
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89 * Offset value of the buffer from where frame starts |
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90 * @return return status |
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91 */ |
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92 virtual TInt SeekSync( const TUint8* aBuf, TInt aBufLen, |
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93 TInt &aSyncPos ) = 0 ; |
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94 /** |
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95 * The function decodes the aSrc buffer. |
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96 * @param aSrc |
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97 * Pointer to the source buffer |
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98 * @param aSrcUsed |
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99 * Size of the source buffer |
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100 * @param aDst |
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101 * Pointer to the destination buffer |
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102 * @param aDstLen |
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103 * Size of the destination buffer |
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104 * @return return status |
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105 */ |
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106 virtual TInt Decode( TUint8* aSrc, TInt& aSrcUsed, TUint8* aDst, |
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107 TInt& aDstLen ) = 0 ; |
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108 |
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109 }; |
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110 |
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111 #endif //ARIMP3DECWRAPPER_H |
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112 |
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113 //----------------------------------------------------------------------------- |
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114 // End of File |
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115 //----------------------------------------------------------------------------- |